Inverse Diagonal three dots symbol in LaTeX

In this tutorial, I will show how to get the inverse diagonal three dots symbol in LaTeX with multiple packages.

To get the inverse diagonal three dots in LaTeX, you can use the \ddots command as an argument in \reflectbox{<arg>} command. In this case, you have to load the graphicx package in the preamble.

\documentclass{article}
\usepackage{graphicx}
\begin{document} 

   $$ \verb|\reflectbox{$\ddots$}| \rightarrow \reflectbox{$\ddots$} $$
   $$ {2^{2^{2^{\reflectbox{$\ddots$}^{2}}}}} $$

\end{document}

Output:

Other packages to get inverse diagonal dots

Multiple packages provide commands to get different styles of this symbol. I listed all of them.

Package	Command	Output
graphicx	\reflectbox{$\ddots$}
MnSymbol	\udots
fdsymbol	\udots
stix	\adots
mathdots	\iddots
yhmath	\adots

Let’s try some packages.

\documentclass{article}
\usepackage{MnSymbol}
\usepackage{mathdots}
\usepackage{yhmath}
\begin{document} 

   With \texttt{MnSymbol} package:
   $$ {2^{2^{2^{\udots^{2}}}}} $$

   With \texttt{mathdots} package:
   $$ {2^{2^{2^{\iddots^{2}}}}} $$

   With \texttt{yhmath} package:
   $$ {2^{2^{2^{\adots^{2}}}}} $$

\end{document}

Output: